993 front end float
07-19-2012, 08:46 AM
#17
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Hi Oomsung,
There are a lot of things to consider:
1. 911s require a slightly different driving style from most other cars, which if unfamiliar with them might take a little bit of practice. General rule for corners is slow in, fast out. Or just make sure (by controlling the break, or throttle, or gear change) that you effect a weight transfer to the front of the car as you turn into a corner.
2. Check your wheel alignment, 993s are very sensitive to wheel alignment and a car that is set up well, is day and night from a car that is set up poorly. Also, you don't have to go with the standard factory setting. The suspension settings are fully adjustable, so you can ask someone with knowledge to set it up to suit your driving style.
3. Check that your springs and dampers are not too old. If they the original ones from the factory, then they at least 15-18 years old now, that is too old and can cause the handling to feel like rubbish, so you should get new ones.
There are many different ones you can choose from. Many people don't buy the Porsche ones, but instead buy Bilstein PSS10, or KW, or others.
4. One cheap modification is to replace the standard roll bars with 993RS roll bars, they are stiffer and adjustable so will make the front end bite better (but makes the back looser).
You should take your car to someone who knows these cars to get it looked at and discuss your options.
Check out the link below to nine64's post from a few years ago:
https://rennlist.com/forums/rennlist...track-day.html
There are a lot of stunning Porsches in Thailand, it seems. If the cars in the video are maintained by AAS and Siam 911 in Bangkok, then those are probably not bad places to start. They seem like they cater to the enthusiast and really know there stuff.
Nothing drives better than a well set up 911.. Good luck with your car.
There are a lot of things to consider:
1. 911s require a slightly different driving style from most other cars, which if unfamiliar with them might take a little bit of practice. General rule for corners is slow in, fast out. Or just make sure (by controlling the break, or throttle, or gear change) that you effect a weight transfer to the front of the car as you turn into a corner.
2. Check your wheel alignment, 993s are very sensitive to wheel alignment and a car that is set up well, is day and night from a car that is set up poorly. Also, you don't have to go with the standard factory setting. The suspension settings are fully adjustable, so you can ask someone with knowledge to set it up to suit your driving style.
3. Check that your springs and dampers are not too old. If they the original ones from the factory, then they at least 15-18 years old now, that is too old and can cause the handling to feel like rubbish, so you should get new ones.
There are many different ones you can choose from. Many people don't buy the Porsche ones, but instead buy Bilstein PSS10, or KW, or others.
4. One cheap modification is to replace the standard roll bars with 993RS roll bars, they are stiffer and adjustable so will make the front end bite better (but makes the back looser).
You should take your car to someone who knows these cars to get it looked at and discuss your options.
Check out the link below to nine64's post from a few years ago:
https://rennlist.com/forums/rennlist...track-day.html
There are a lot of stunning Porsches in Thailand, it seems. If the cars in the video are maintained by AAS and Siam 911 in Bangkok, then those are probably not bad places to start. They seem like they cater to the enthusiast and really know there stuff.
Nothing drives better than a well set up 911.. Good luck with your car.
07-19-2012, 09:17 AM
#18
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Location: Arlington Heights, IL
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The need for an alignment, to me, is two attributes:
First - Safety
Second - your style of driving
When I purchased my car, it did several things i did not want it to do.
When I drove over white stripes on the road, the steering wheel pushed by itself following the white stripes.
It over steered as well, and steering was (so called) very precise.
It used to aquaplane like hell.
Years after, i do the alignment myself.
I follow the exact figures on the factory sheets.
I fine tune toe in/out meticulously.
Ie: I do the alignment, go for a ride, recheck toe and adjust, two to three times, until toe reads constant.
As a consequence, no aqua planing ever, on low or high speed.
Hard braking is straight at high speed, even without hands on steering wheel.
No juddering on high speed, irregular road braking.
No floating on high speed corner braking.
No under steering or over steering, at the speeds I drive at on highway entrances.
Although the settings suit me great, the rear wheels inner surfaces get worn faster than the outsides.
As a consequence, I recheck the figures on my beissbarth alignment machine, and the figures are factory, so I neglect the fact of the rear wearing from inside more.
As long as it handles securely, and suits my driving, I rest confident.
Ps: when I say high speed driving, I mean as a regular autobahn customer at above 200 km/h, without being pretentious, and yes my car is driven under pouring rain regularly
First - Safety
Second - your style of driving
When I purchased my car, it did several things i did not want it to do.
When I drove over white stripes on the road, the steering wheel pushed by itself following the white stripes.
It over steered as well, and steering was (so called) very precise.
It used to aquaplane like hell.
Years after, i do the alignment myself.
I follow the exact figures on the factory sheets.
I fine tune toe in/out meticulously.
Ie: I do the alignment, go for a ride, recheck toe and adjust, two to three times, until toe reads constant.
As a consequence, no aqua planing ever, on low or high speed.
Hard braking is straight at high speed, even without hands on steering wheel.
No juddering on high speed, irregular road braking.
No floating on high speed corner braking.
No under steering or over steering, at the speeds I drive at on highway entrances.
Although the settings suit me great, the rear wheels inner surfaces get worn faster than the outsides.
As a consequence, I recheck the figures on my beissbarth alignment machine, and the figures are factory, so I neglect the fact of the rear wearing from inside more.
As long as it handles securely, and suits my driving, I rest confident.
Ps: when I say high speed driving, I mean as a regular autobahn customer at above 200 km/h, without being pretentious, and yes my car is driven under pouring rain regularly
07-19-2012, 02:17 PM
#19
Hi,marcb993, usefull advise, sure i will find the expert looking at my car.
About the wayto go through the corner,would you please explain more,would be great ifyou go deep to detail 'how' to do that step by step.
I have thai friend driving porsche here whom can expain me too, but still want to hear from you and gentelmen around here too. many thanks!
About the wayto go through the corner,would you please explain more,would be great ifyou go deep to detail 'how' to do that step by step.
I have thai friend driving porsche here whom can expain me too, but still want to hear from you and gentelmen around here too.
many thanks!
07-20-2012, 04:57 AM
#23
Banned
I think I know your problem. I had the same problem on my C4S.The front end was really floaty, especially around high speed corners! My pre-alignment showed the alignment numbers were out of specs. A good alignment and corner balance took care of the problem. The car now handles like it is on rails. Only problem now is... I like going around corners like Mario Andretti! :-)
07-20-2012, 07:12 PM
#25
Banned
It depends on your suspension, if it is factory stock, any good Porsche shop can do it. If it is aftermarket like pss9, looks for experience suspension/Porsche experience shop to do it. In Washington state, I had Tru Line do the alignment for me.
07-21-2012, 02:57 PM
#28
Drifting
Nice Targa!
Go to an alignment shop that knows Porsche, they specifically need a kinematic tool to make proper adjustments, as well can make a recommendation too. When I'm in BKK I rarely see air-cooled cars running around, always thought with all that traffic and heat, def not the place to drive one.
As many have suggested, I would start with a new alignment and then trouble shoot from there. I know those roads in BKK can be pretty bad, hit a decent few bumps with good speed I'm sure the toe setting can go out. You probably have some factory euro suspension too, since it's right hand drive and obviously not N.American.
Good luck!
Go to an alignment shop that knows Porsche, they specifically need a kinematic tool to make proper adjustments, as well can make a recommendation too. When I'm in BKK I rarely see air-cooled cars running around, always thought with all that traffic and heat, def not the place to drive one.
As many have suggested, I would start with a new alignment and then trouble shoot from there. I know those roads in BKK can be pretty bad, hit a decent few bumps with good speed I'm sure the toe setting can go out. You probably have some factory euro suspension too, since it's right hand drive and obviously not N.American.
Good luck!
07-22-2012, 11:00 AM
#30
no htwo o,thanks,i try to but can not reduce it,too big ,right :>
knight,thanks..nice to meet someone has been in bangkok here! did you drive porsche in bkk?
and yes ,i will do wheel alignment first by porsche specialist,and recheck my suspension.
driving in bkk is like driving on the moon,not smooth at all!!
knight, do you please recommend the suitable suspension for this kind of road?
knight,thanks..nice to meet someone has been in bangkok here! did you drive porsche in bkk?
and yes ,i will do wheel alignment first by porsche specialist,and recheck my suspension.
driving in bkk is like driving on the moon,not smooth at all!!
knight, do you please recommend the suitable suspension for this kind of road?